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@uitrit giftige. latent @ff-irc.`

we. SAVAGE, `or KNoXvILLs, iowa'.

Lam Patent-N0'. 79,863, daad Juzg 14, 186s.

IMPROVEMENTIN STEAM-ENGINES.-

'1,0 ALL 4WHOM IT MAY GONCERN: y

Be it known that I, W. G. SAVAGE, of Knoxville, inthe county'of Marion, and in the State of Iowa, have invented new and useful Improvements in Steam-Engines; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanyingidrawngs, and thaletters'cf reference marked thereon. u i

In the annexed drawings, making a part'of this specification, Rl represents a frameot` any required dimensions, upon which is secured, in any ordinary-or convenient manner, the cylinder D.

4 The veylinder D has two main ports leading `through its back head, A, to the opposite ends thereofene extending along the outside, asseen at B, and one passing directly throngh the head A'into the cylinder D, as seen at a.`

The mouths of these ports B and a are elongated from'centre to circumference ofthe head A, as shown inA Figure 2 of the drawings, so as to receive or'exhaust'the steam, by means -of the ports h and z of the revolving` valve C. Y l l 'Secured to or forming apart of the head A, is a suitable hub,'b, on` which the movable valve C revolves, and

from'which projectvholts ZJ, which securcthc double steam-chest E. l

G represents a movable circular valve, provided with a-hole in its centre to yfit and work on the hub b, and with cogs on its periphery, by which it is operated by means 4of the cog-wheel G, with whichsaid valve-'cogs mesh. The valve C is made with two series of holes orV ports, L and ,-the ports t being the'receiving-por'ts and z' the exhaustingports. Auydesired-number of"ports may be used, according to the size of-the'valve, one4 pgznjrt inV each series being exactly opposite one' port of` the 'other series. When .the receiving-partei pass over `either ofthe main ports, a or B, in the head A, the exhaust-ports h of thevalve pass over the mouth of the other main port, and so onthrough the whole set..

- Thus it will be seen that when the steam passes into Vouelef the main ports it is allowed to escape Athrough r from the other. A l Y The valve C is ground, so as to make a perfect steam t between'the head and steam-chest E.. The said double steam-chest E is made circulargiof size equal to the valve C, and is boltedto the hub b by means of bolts Z Z. This double clicstis made by cutting away from the face-sidetwo groo ves,lg andf. A s shown in -:the dra'w ings, the grooveg is the receiving-chest, and ll'as'afpipc leading in'to'it, and is covered a part of the way around,

leaving two ports on opposite sides, so as to obviate 'unnecessary pressure and friction onand of the valvezCr,

The groovef'is the exhaust-chest', and has asuitahle hole leading therefrom, through which the steatri'-mayy escape. l I

L represents thepis'ton-rod, which connects with and operatcs'the crank P on the end f the horizon tal shaft K. Said shaft K ssecured'or acljriste`din'the frame R iii any suitab'lemanner, and :h a'sft'he crank P secured to one end-thereof, and cog-wheel I to the otherend.. `V 'I I F represents ay longitudinal horizontal shaft, .adjusted onthe frame R parallel with the cylinderD, and has secured co`g-wheel H at one end, which meshes with and is operated by the wheel-Land a't the'other end an adjustable cog-wheel, G, which meshes with nand 'operates 4the valve C. l l V I The shaft F has a suitable groove, in which is secured a small spring, z, which catches in a notch in the hole of the wheel G, and-keeps the same from-turning. The spring is provided-iwithisuitable shoulders to keep said wheel G fromslipping on its shaft longitudinally. l l

It will be seen that as soon as the steam is admitted intoV the cylinder D the piston-red operates theV shaft K,`which in turn operates the shaft Rand the wheel G'thereoi' turns `the valveC, and by means of its ports h and z the steam is admitted and exhausted alternately in the ends of the cylinder D.

S represents a spring-lever secured to the side of the head A, and is designed to operate on thelspring w and press it'out of gear with the wheel G, and thereby allow the shaft F to turn halfaround, when said spring x catches in another groove in the opposite side ofthe wheel Gr, and starts it forward again, and itfi'turn starts the valve C. When the vlve C commences its motion the piston and crank must of necessity move the other,

vand thus, by this very simple device, motion is reversed; and it will be seen that my valve may be used on locomotive-engines as well as stationary ones.

Having thusfully described fly-invention, what I claim as new, and desire to secure by. Letters Patent, is 1; The arrangement ofthe lever S and spring :n with the shaft F and wheel G, by which means the motion of the engine is reversed, substantially as set forth.

2. The combination of the valve C with the head A, having a. hub, b, and the cylinder D, with its steamspaces B a, constructed and operating substantially as specied. K

In testimony that I claim the foregoing, I havehereunto set my' hand and seal, this-21st day of January,

W. Gr. SAVAGE. [Ls]- Witnesses:

H. B. KEEFER, A. B. MILLER. 

